Abstract：
The fundamental limitation for pore preservation in a Type III porous liquid (T3PL) is the need for a small aperture from the porous filler to realize size exclusion of a bulky solvent. We present a dual-layer surface weaving strategy that can disregard this limitation and achieve micro- and mesoporous metal-organic framework (MOF)-based T3PLs even with apertures much larger than the solvent molecules. By first weaving a tight network of poly(tert-butyl methacrylate) on the MOF surface, the poly(dimethylsiloxane) (PDMS) solvent can be effectively excluded from the pores while smaller guest molecules such as CO2, C2H4, and H2O can freely access the interior, as confirmed by low-pressure adsorption isotherms. Further application of a PDMS-containing polymer coating helps lower the viscosity of the PL due to increased particle dispersibility. This strategy has resulted in the successful construction of T3PLs with aperture sizes up to 3.1 nm.
摘要：
在III型多孔液体(T3PL)中孔保存的基本限制是需要从多孔填料中获得小孔以实现大体积溶剂的尺寸排除。我们提出了一种双层表面编织策略，该策略可以忽略此限制，即使孔径比溶剂分子大得多，也可以实现基于微孔和中孔金属有机框架（MOF）的T3PL。通过首先在MOF表面上编织聚（甲基丙烯酸叔丁酯）的紧密网络，聚（二甲基硅氧烷）（PDMS）溶剂可以有效地从孔中排除，而较小的客体分子如CO2，C2H4和H2O可以自由地进入内部，低压吸附等温线证实了这一点。由于增加的颗粒分散性,进一步施加含PDMS的聚合物涂层有助于降低PL的粘度。该策略导致了孔径尺寸高达3.1nm的T3PL的成功构建。
